## Alexis1994_13 4 years ago f(z)=(3*z+1)/(z+4*i) f(2+1)= ? Please help,I am founding fault result.

1. Thomas9

f(3)=(3*3+1)/(3+4i)=10(3-4i)/25=6/5+4i/25

2. joemath314159

was it f(2+i) or f(2+1) = f(3)?

3. Alexis1994_13

Sorry! it's f(2+i)!

4. myininaya

factorial thats scary

5. myininaya

i know thats an exclamation mark

6. myininaya

$f(2+i)=\frac{3(2+i)+1}{2+i+4i}$ what exactly do you want? you seem to be in upper level class so what should i write this as or i mean what is the goal

7. joemath314159

scanning solution now, answer in sec....then breakfast >.>

8. myininaya

im gonna have a fruit smoothie joe what state do you live in?

9. joemath314159

10. myininaya

i live next door

11. joemath314159

solution, might be wrong, i think its right though. hunger has adverse effects on math.

12. myininaya

13. Alexis1994_13

I am founding (7+3i)/(2+5i) but the answer is 1-i.

14. joemath314159

next door? Louisiana? i think thats spelled right

15. myininaya

no arkansas

16. joemath314159

LOL i added wrong. 14+15 is 29, not 39

17. myininaya

see we arent all hicks

18. joemath314159

you are on the right path alexis, you just need to get the complex number out of the denominator of that fraction.

19. joemath314159

thats true, we all arent hick lolol

20. Alexis1994_13

I was never think do mutliply with (2+5i). Thanks a lot guys! :D

21. myininaya

$\frac{7+3i}{2+5i}*\frac{2-5i}{2-5i}=\frac{14-35i+6i-15i^2}{4-5i^2}$

22. myininaya

lol

23. myininaya

go eat your breakfast

24. joemath314159

alright.....breakfast, i'll see you guys later lol

25. Alexis1994_13

I hope you will be here to answer and at my next questions :D lol

26. myininaya

are you in algebra?

27. myininaya

im confused because some of these questions seems algebra like and some look little different

28. Alexis1994_13

Yes,Algebra. Coplex part.

29. myininaya

complex part?

30. Alexis1994_13

At complex chapter.

31. satellite73

still up

32. myininaya

yep my hours are messed up

33. satellite73

wow you should get some sleep. not good to stare at computer all night

34. myininaya

i watched the racoons in backyard at 5 ish

35. satellite73

raccoons in the back yard?!

36. myininaya

i put cat food out for the wild cats but i seen like 5 racoons gang bang it this morning

37. myininaya

they are interesting

38. Alexis1994_13

Answer to my new question :D

39. satellite73

wild cats! raccoons! what in the world? any opossums?

40. myininaya

k

41. satellite73

i would think the cats would scare off the raccoons

42. myininaya

yes i see opossums around here

43. satellite73

i thought you were on the west coast. shows you what i know

44. satellite73

you doing complex variables problems?

Alexis please review the multiplication of the denominator: (2+5i)(2-5i). It is not:$4-5i ^{2}$

46. myininaya

because its 4-25i^2 lol